Check the listing for details. 2pack 2-56 UNC 2B High Speed Steel Uncoated Machine Spiral Flutes Threading Taps. Condition: New. Listed at 16.60 USD. Specifications:Thread Size: 2-56 UNCThread Length: 10mm / 0.39"Square End Size: 2.4mm / 0.09"Total Length: 44mm / 1.73"Thread Tolerance Grade: 2BMaterial: High Speed Steel (HSS)Finish: UncoatedNumbers of Flutes: 3 FlutesCutting Direction: Right HandPackage Content: 2pcs x Spiral Flute Thread TapDescriptions:Spiral flute design, upward chip removal. Right hand thread cutting, clear threads, fast tapping with accuracy. High speed steel tool has high hardness and toughness, heat resistance and wear resistance. Features the base substrate without any coatings. Fit for most general purpose thread tapping.Suitable for processing holes and sticky materials. Great for drilling and tapping aluminum, die steel, stainless steel, bronze, hard plastics, etc..